No matter how fast your WRX/ STI goes, you'll need better stopping power. Unfortunately the oem subaru covers don't provide adequate amount of air flow to keep your brakes cooled. That's why the guys over at APR, designed these larger brake cooling ducts to funnel in massive amounts of air into your 2011-2014 Subaru WRX / STI brakes. Not only will these increase breaking performance/endurance, but will look pretty cool in your Subaru. Built with carbon reinforced polymer composite materials, you can assure these ducts will last longer than your vehicle and carry no weight where it counts.

For an even greater cooling efficiency, we recommend using high-temperature air duct hoses (not included) to channel air directly to keep the red-hot brake rotors cool lap after lap on the track.

Carbon Fiber Construction: This component is formed in the autoclave at high temperatures using pre-pregnated carbon fiber manufacturing processes, for high strength and low weight.

UV Resistant Coating: Each Air Duct is finished with UV-resistant clear-coat paint for resistance against various environmental conditions (take care of this as you would take care of your vehicle's paint finish - polish then coat with good-quality wax or synthetic protectant).

I mainly bought this for looks and it really sets the car apart. Fitment is not 100% perfect, but with a little bit of work you can make it fit perfect (a little trimming needed). Front looks way more aggressive now. Will be installing some duct hoses soon to get some cold air to intake and top mount intercooler.